The USS Thresher was a nuclear submarine that was designed to seek and destroy Soviet submarines. The submarine had the most sophisticated weapons systems available at the time, as well as highly sensitive sonar that was capable of detecting ships at great distances. The ship was ordered in 1958, and was built at the Portsmouth Naval Shipyard. It was launched in 1960, and commissioned in 1961. The ship unfortunately met with disaster during deep diving tests, resulting in the deaths of 129 crew members and officers.

I have a few thoughts on this book. I thought that naming the ship Thresher after the shark was pretty neat. I also had no idea that that many people operated a submarine. I am not very knowledgeable about ships, and certainly not submarines, and I have no idea why I assumed there were probably just ten or twenty people on board maximum. Submarines are horrifying to me, simply because you are under all that water and you can't just eject or something when things go wrong. The pressure of the water is scary! Not to mention living in such cramped conditions with that many people. It also really always slips my mind that President Kennedy was actually doing presidential things and dealing with issues like this while in office. 

As far as the writing of this book, I found it to be very informative about submarines in general and especially this particular disaster. I had not previously heard of this, and I do love a disaster book. It was entertaining, and it isn't terribly long either. This book is actually currently available on Audible Plus, but if you are interested in reading the physical copy, it is just over 200 pages. I thought it was a really decent book.